020
FNCA52 TJSJ 231930
FWFSJU
FIRE WEATHER PLANNING FORECAST FOR PUERTO RICO
NATIONAL WEATHER SERVICE SAN JUAN PR
330 PM AST SAT MAY 23 2026
DISCUSSION
NO FIRE DANGER IS EXPECTED TODAY.
PRZ014-240800-
SOUTHEAST COASTAL PLAINS-
330 PM AST SAT MAY 23 2026
TONIGHT SUN SUN NIGHT MON
CLOUD COVER MCLDY PCLDY MCLEAR PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 70 40 20 30
TEMP (24H TREND) 71 (-3) 88 (+1) 72 89
RH % (24H TREND) 91 (+5) 53 (-6) 88 49
WIND 20FT/EARLY(MPH) E 14 E 18 E 13 E 20
WIND 20FT/LATE(MPH) NE 11 E 18 G25 NE 13 E 19
MIXING HGT(FT-AGL/MSL) 4790 5330
TRANSPORT WND (MPH) E 18 E 21
VENT RATE (KT-FT) 76640 95940
DISPERSION 5 5
DSI 5 6 5 6
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
PRZ015-240800-
SOUTHERN HILLS-
330 PM AST SAT MAY 23 2026
TONIGHT SUN SUN NIGHT MON
CLOUD COVER MCLDY PCLDY MCLEAR PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 70 50 10 40
TEMP (24H TREND) 68 (-4) 84 (+2) 68 85
RH % (24H TREND) 98 (+6) 65 (-5) 95 59
WIND 20FT/EARLY(MPH) E 13 E 13 E 13 E 16
WIND 20FT/LATE(MPH) E 12 E 13 G21 E 14 E 16
MIXING HGT(FT-AGL/MSL) 5350 5600
TRANSPORT WND (MPH) E 16 E 20
VENT RATE (KT-FT) 74900 95200
DISPERSION 5 5
DSI 4 6 3 6
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
PRZ016-240800-
NORTH COASTAL PLAINS-
330 PM AST SAT MAY 23 2026
TONIGHT SUN SUN NIGHT MON
CLOUD COVER PCLDY PCLDY MCLEAR PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 50 40 10 60
TEMP (24H TREND) 71 (-3) 86 (0) 71 87
RH % (24H TREND) 97 (+4) 65 (-4) 95 60
WIND 20FT/EARLY(MPH) E 19 E 17 E 18 E 17
WIND 20FT/LATE(MPH) E 13 E 19 E 17 E 23
MIXING HGT(FT-AGL/MSL) 4260 4960
TRANSPORT WND (MPH) E 18 E 22
VENT RATE (KT-FT) 68160 94240
DISPERSION 5 5
DSI 6 6 6 6
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
PRZ017-240800-
NORTHERN HILLS-
330 PM AST SAT MAY 23 2026
TONIGHT SUN SUN NIGHT MON
CLOUD COVER PCLDY PCLDY MCLEAR PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS TSTMS
CHANCE PRECIP (%) 70 50 10 60
TEMP (24H TREND) 69 (-2) 85 (+1) 69 86
RH % (24H TREND) 99 (+3) 68 (-1) 97 61
WIND 20FT/EARLY(MPH) E 17 E 14 E 14 E 16
WIND 20FT/LATE(MPH) E 10 E 18 E 13 E 19
MIXING HGT(FT-AGL/MSL) 5260 5430
TRANSPORT WND (MPH) E 15 E 17
VENT RATE (KT-FT) 68380 81450
DISPERSION 5 5
DSI 5 6 5 6
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
PRZ018-240800-
WEST COAST-
330 PM AST SAT MAY 23 2026
TONIGHT SUN SUN NIGHT MON
CLOUD COVER PCLDY PCLDY MCLEAR PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS TSTMS
CHANCE PRECIP (%) 70 80 10 40
TEMP (24H TREND) 71 (-2) 89 (+1) 71 90
RH % (24H TREND) 96 (+4) 63 (-3) 93 57
WIND 20FT/EARLY(MPH) E 13 E 13 E 16 E 16
WIND 20FT/LATE(MPH) E 11 E 13 E 17 E 16
MIXING HGT(FT-AGL/MSL) 4870 4730
TRANSPORT WND (MPH) E 10 E 13
VENT RATE (KT-FT) 43830 52030
DISPERSION 5 5
DSI 5 6 4 6
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
PRZ019-240800-
EASTERN INTERIOR-
330 PM AST SAT MAY 23 2026
TONIGHT SUN SUN NIGHT MON
CLOUD COVER MCLDY PCLDY PCLDY PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 60 60 20 60
TEMP (24H TREND) 69 (-4) 84 (+1) 69 86
RH % (24H TREND) 99 (+5) 66 (-4) 95 62
WIND 20FT/EARLY(MPH) E 14 E 14 G23 E 16 G23 E 16
WIND 20FT/LATE(MPH) E 14 E 14 G23 E 17 E 16
MIXING HGT(FT-AGL/MSL) 4120 5580
TRANSPORT WND (MPH) E 17 E 20
VENT RATE (KT-FT) 61800 94860
DISPERSION 5 5
DSI 4 6 4 6
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
PRZ022-240800-
LUQUILLO MOUNTAIN RANGE-
330 PM AST SAT MAY 23 2026
TONIGHT SUN SUN NIGHT MON
CLOUD COVER MCLDY MCLDY PCLDY MCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 70 60 40 60
TEMP (24H TREND) 67 (-4) 81 (+2) 68 82
RH % (24H TREND) 100 (+4) 70 (-6) 97 66
WIND 20FT/EARLY(MPH) E 12 E 12 G21 E 12 G21 E 13
WIND 20FT/LATE(MPH) E 11 E 12 G23 E 13 E 13
MIXING HGT(FT-AGL/MSL) 3460 4250
TRANSPORT WND (MPH) E 20 E 21
VENT RATE (KT-FT) 58820 76500
DISPERSION 5 5
DSI 6 6 6 6
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
PRZ023-240800-
CENTRAL MOUNTAIN RANGE-
330 PM AST SAT MAY 23 2026
TONIGHT SUN SUN NIGHT MON
CLOUD COVER PCLDY PCLDY MCLEAR PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS TSTMS
CHANCE PRECIP (%) 80 70 10 50
TEMP (24H TREND) 66 (-3) 83 (+3) 65 85
RH % (24H TREND) 99 (+4) 70 (-4) 97 61
WIND 20FT/EARLY(MPH) E 11 E 10 E 11 E 11
WIND 20FT/LATE(MPH) E 9 E 10 E 11 E 12
MIXING HGT(FT-AGL/MSL) 6190 5800
TRANSPORT WND (MPH) E 12 E 14
VENT RATE (KT-FT) 61900 69600
DISPERSION 5 5
DSI 3 6 3 6
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
PRZ024-240800-
CAYEY MOUNTAIN RANGE-
330 PM AST SAT MAY 23 2026
TONIGHT SUN SUN NIGHT MON
CLOUD COVER MCLDY PCLDY PCLDY PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 70 50 30 60
TEMP (24H TREND) 68 (-3) 80 (0) 68 81
RH % (24H TREND) 100 (+2) 72 (-3) 97 67
WIND 20FT/EARLY(MPH) E 11 E 12 E 11 E 13
WIND 20FT/LATE(MPH) E 10 E 12 E 11 E 13
MIXING HGT(FT-AGL/MSL) 3640 4500
TRANSPORT WND (MPH) E 18 E 22
VENT RATE (KT-FT) 58240 85500
DISPERSION 5 5
DSI 4 6 5 6
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
PRZ025-240800-
VIEQUES-
330 PM AST SAT MAY 23 2026
TONIGHT SUN SUN NIGHT MON
CLOUD COVER PCLDY PCLDY PCLDY MCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 50 60 50 50
TEMP (24H TREND) 74 (-4) 87 (0) 75 88
RH % (24H TREND) 92 (+9) 59 (-3) 87 59
WIND 20FT/EARLY(MPH) E 18 E 18 G25 E 19 E 18 G25
WIND 20FT/LATE(MPH) E 18 E 18 G25 E 20 E 18
MIXING HGT(FT-AGL/MSL) 3490 3580
TRANSPORT WND (MPH) E 22 E 25
VENT RATE (KT-FT) 66310 78760
DISPERSION 5 5
DSI 6 6 6 6
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
PRZ026-240800-
CULEBRA-
330 PM AST SAT MAY 23 2026
TONIGHT SUN SUN NIGHT MON
CLOUD COVER PCLDY PCLDY PCLDY PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 60 50 40 50
TEMP (24H TREND) 76 (-2) 90 (+2) 76 90
RH % (24H TREND) 91 (+7) 57 (-6) 88 56
WIND 20FT/EARLY(MPH) E 18 E 18 G26 E 19 E 19
WIND 20FT/LATE(MPH) E 18 E 18 G25 E 20 E 19
MIXING HGT(FT-AGL/MSL) 3810 3690
TRANSPORT WND (MPH) E 23 E 25
VENT RATE (KT-FT) 76200 81180
DISPERSION 5 5
DSI 6 6 6 6
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
PRZ027-240800-
SOUTHWEST COASTAL PLAINS AND MONA ISLAND-
330 PM AST SAT MAY 23 2026
TONIGHT SUN SUN NIGHT MON
CLOUD COVER PCLDY PCLDY MCLEAR PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 60 50 10 30
TEMP (24H TREND) 72 (-3) 90 (+2) 72 90
RH % (24H TREND) 88 (+5) 51 (-6) 88 49
WIND 20FT/EARLY(MPH) E 19 E 19 E 16 E 21
WIND 20FT/LATE(MPH) E 14 E 20 E 13 E 23
MIXING HGT(FT-AGL/MSL) 4860 5290
TRANSPORT WND (MPH) E 18 E 21
VENT RATE (KT-FT) 77760 95220
DISPERSION 5 5
DSI 5 6 4 6
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
VIZ001-240800-
SAINT THOMAS AND SAINT JOHN-
330 PM AST SAT MAY 23 2026
TONIGHT SUN SUN NIGHT MON
CLOUD COVER PCLDY PCLDY PCLDY PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 50 50 30 40
TEMP (24H TREND) 74 (-4) 86 (+1) 75 86
RH % (24H TREND) 91 (+8) 62 (-3) 89 62
WIND 20FT/EARLY(MPH) E 19 E 19 G27 E 20 E 19
WIND 20FT/LATE(MPH) E 19 E 18 G26 E 20 E 19
MIXING HGT(FT-AGL/MSL) 3720 3640
TRANSPORT WND (MPH) E 24 E 25
VENT RATE (KT-FT) 78120 80080
DISPERSION 5 5
DSI 6 6 6 6
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
VIZ002-240800-
ST CROIX-
330 PM AST SAT MAY 23 2026
TONIGHT SUN SUN NIGHT MON
CLOUD COVER PCLDY PCLDY PCLDY PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 50 40 50 40
TEMP (24H TREND) 75 (-2) 87 (+1) 75 88
RH % (24H TREND) 91 (+5) 62 (-4) 88 61
WIND 20FT/EARLY(MPH) E 18 E 18 G26 E 19 E 18
WIND 20FT/LATE(MPH) E 17 E 18 G25 E 19 E 18
MIXING HGT(FT-AGL/MSL) 4310 4990
TRANSPORT WND (MPH) E 24 E 25
VENT RATE (KT-FT) 90510 109780
DISPERSION 5 5
DSI 6 6 6 6
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
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